Industry Knowledge Base

I used a steel factor of 2.32 tCO2e/t but my report seems too high — what went wrong?

The 2.32 tCO2e/t value is the worldsteel full-scope emissions intensity (all scopes 1, 2, and some 3) — this is NOT a material factor.

For material factors (Scope 3 upstream), you need the cradle-to-gate A1-A3 value: 2.25 kgCO2e/kg from worldsteel eco-profile.

Using the full-scope intensity as a material factor double-counts: it includes your own Scope 1/2 emissions that you already calculated separately.

Rule: material factors are always cradle-to-gate (A1-A3 in EN 15804 terms), never full-scope intensities.

Basis: worldsteel eco-profile 2024 Table 1; worldsteel Sustainability Indicators 2024

My EPD shows a different electricity factor than my CBAM report — which is right?

Both can be right — they serve different purposes.

EPD (EN 15804) typically uses location-based grid factors (UBA 0.344 kgCO2/kWh for Germany).

CBAM uses the EU reference grid factor (0.314 kgCO2/kWh) for embedded emissions calculation.

The CBAM EU factor is an EU-wide reference, not the German-specific value. Do not mix them in the same report.

Always state which grid factor you used and its source in the report.

Basis: EN 15804:2012+A2:2019; European Commission CBAM guidance (default electricity reference values); Umweltbundesamt Strommix CO2-Emissionsfaktor

The steel factor in the database is 2.25 kgCO2e/kg but I also see 2.32 tCO2e/t — are these the same?

No. 2.25 kgCO2e/kg = 2.25 tCO2e/t is the cradle-to-gate A1-A3 material factor from worldsteel eco-profile.

2.32 tCO2e/t is the full-scope emissions intensity (includes all scopes 1, 2, and some 3) from worldsteel Sustainability Indicators.

They measure different things: material factor = upstream production only; intensity = total emissions per tonne of steel produced.

For Scope 3 material accounting, use 2.25 kgCO2e/kg. For benchmark comparison, use 2.32 tCO2e/t. Never mix them.

Basis: worldsteel eco-profile 2024 Table 1; worldsteel Sustainability Indicators 2024

My electricity bill total doesn't match when I divide by the unit price — why?

German electricity bills include 19% VAT (Mehrwertsteuer). If you divide the total (including VAT) by the net unit price (Arbeitspreis), you get a 19% overestimate.

Also check: Grundpreis (annual fixed fee) should be subtracted before dividing by Arbeitspreis.

The back-calculation formula: net energy charge = (total bill ÷ 1.19) − Grundpreis; quantity = net energy charge ÷ Arbeitspreis.

Our platform automatically strips VAT and Grundpreis before cross-checking — but you should understand why the raw numbers don't match.

Basis: German VAT Act (UStG); BDEW Strompreisanalyse 2026

Is the magnesium factor 21.8 or 28? I see both numbers labelled Pidgeon process.

Both are correct; the difference is how by-product credits are handled: 21.8 is the weighted value including coke-oven / semi-coke gas by-product credits, 28.0 is the full-upstream average with no credits.

Same source, same system boundary — only the credit method differs. So the two numbers must appear together; reporting only one is misleading, because the reader cannot tell whether it includes credits or not.

Why this one trips people up so often: 21.8 vs 28 is a 22% gap — it doesn't look large, but in the cost-carbon trade-off of a whole magnesium die-cast part, that gap is enough to flip the 'primary vs secondary magnesium' sourcing decision.

Also note: roughly 85–96% of China's magnesium comes from the Pidgeon process, so this factor fits domestic die-casting scenarios best. Qinghai salt-lake electrolytic magnesium can go as low as 5.3 kgCO₂e/kg (with chlorine by-product credits), but that is a single-plant demonstration project that the source itself says has not reached full production — it cannot represent the Chinese magnesium supply average.

Basis: EF-MG-INGOT-PIDGEON-IMA-2019 (with credits); EF-MG-INGOT-PIDGEON-IMA-2019-NOCREDIT (without credits); EF-MG-INGOT-QINGHAI-ELEC-2017; IMA LCA Study (2020)

The customer asks 'will switching to secondary aluminium cut our carbon' — what do I calculate it on?

Use the secondary aluminium values in the library: secondary aluminium ingot is about 2.13 kgCO2e/kg versus primary aluminium ingot at about 16.43 kgCO2e/kg — nearly 8× apart, the single easiest move to produce a headline reduction in any report.

But the analogous question for zinc and copper runs the other way: Zamak die-cast alloy ingot is only 0.695 because that producer's feedstock is mostly secondary, while pure zinc ingot SHGZ is 3.818. Both are 'alloy' decisions — the values can differ 5× depending on the secondary-feedstock ratio.

So when answering 'how much will switching to recycled material save', don't just report the factor difference — ask what feedstock ratio the customer can actually achieve. Conversely, citing 0.695 as a generic Zamak value in a report is also wrong: it is the result of a high-secondary-ratio producer.

Copper works the same way: Nordic Brass brass sheet/strip is 1.46, while KME TECU bronze from another producer in the same scheme is 0.91 — 1.8× apart. There is no universal factor for die-cast copper parts; take the value from the actual alloy grade plus the supplier's EPD.

Basis: EF-AL-INGOT-PRIMARY-CN-001; EF-AL-INGOT-SECONDARY-CN-001; EF-ZN-ZAMAK-INGOT-EPD-FI-2024; EF-ZN-SHGZ-INGOT-IZA-2021; EF-CU-BRASS-NORDIC-EPD-FI-2015; EF-CU-BRONZE-TECU-EPD-DE-2011

The customer asks 'is our plant above or below the industry average' — how should I answer?

The honest answer: there is no publicly available, officially or association-benchmarked carbon emissions benchmark for die casting, injection molding, or toys.

This is not a failure to find one — it genuinely does not exist: the benchmark/leading-value scoring introduced by MIIT's GB/T 36132—2025 has the system but no published values (the numbers sit in industry-specific detailed evaluation standards that have not been released); MIIT document Lian Tong Zhuang [2023] No.40's '5% reduction in energy consumption per forged part' is a relative target for forgings, not an industry benchmark value.

Injection molding does not even have a matching national GHG accounting standard (search returns 0 hits), and all 85 toy national standards are safety/performance/labelling — not one touches carbon.

So the correct answer is: 'There is no citable industry benchmark value; we calculate your own product carbon footprint per GB/T 24067-2024 and benchmark multi-period internally, same product and same process.'

If you see a vendor or competitor website quoting something like 'injection industry average X tonnes CO₂ per tonne of product', be suspicious — it almost certainly has no authoritative source, and once that number lands in your report and the customer's due diligence pulls the thread, you own it.

Basis: GB/T 36132—2025; MIIT document Lian Tong Zhuang [2023] No.40; std.samr.gov.cn search results (plastics: 0 hits / toys: all 85 safety-type)

A customer told me ESPR requires a product carbon footprint and we have to do it now — is that true?

ESPR (Regulation (EU) 2024/1781) does list the product carbon footprint as an em* be made * mandatory environmental attribute parameter — Article 4 explicitly names 'carbon footprint of the product' and also mentions providing information via a digital product passport.

But it is a framework regulation: for the carbon footprint to become a mandatory requirement, a Commission delegated act for the specific product group must enter into force.

As of the verification date, no delegated act in force for toys or injection-molded articles was found. At this stage it is not a direct mandatory carbon-data obligation for a toy factory.

The honest phrasing: 'ESPR has brought carbon footprint within the scope of em* be made * mandatory parameters; the delegated act for the specific category has not yet landed; at this stage it is a customer requirement and a future regulatory risk, not a statutory obligation.'

Do not say it is 'already mandatory' — the moment a customer or third party checks that claim, it destroys your credibility at the due-diligence stage, and credibility is the entire value of the report you are selling.

Basis: Regulation (EU) 2024/1781 Art.4

The factors in my report carry A/B/C grades — how do I explain that to a customer?

Grade A = officially published values: MEE announcements, the national factor library. The library currently holds only product carbon-intensity values at this grade, such as crude steel 1.60 and unwrought aluminium 1.69.

Grade B = industry-association representative LCA / eco-profiles: published by worldsteel, IMA, IZA, ICA and others, with external peer review.

Grade C = a single company's third-party-certified EPD, or data whose reference year is old: these values carry product specificity by nature — that plant's electricity use, that plant's feedstock mix, not an industry average.

The honest way to tell the customer is to label every number in the report with its grade and state the applicability limits of C-grade values. For example, the grey cast iron entry is grade C (single-plant EPD), so you must also tell the customer it includes overseas hydro power with GOO certificates, and that on the Chinese grid it becomes 0.816.

Do not present grade-C values as 'industry data'. This site deliberately refuses to rate company-self-reported EPDs as grade B — a customer's due-diligence reviewer will immediately ask 'why is a self-reported figure authoritative-grade', and once that question is on the table, the credibility of your whole report suffers.

Basis: Factor-library quality field definition; EF-FE-GREY-CASTING-EPD-NO-2024 (grade C)

Which electricity emission factor should I use for the German grid?

For location-based Scope 2 accounting, use the UBA (Umweltbundesamt) German grid mix factor: exactly 344 gCO2/kWh for 2025 (official UBA figure, published 2026; 2024: 353, 2023: 379).

The UBA factor is the official German government value, recalculated and published annually.

For market-based accounting (green tariffs, PPAs), you may use supplier-specific factors or the residual mix.

Do not use the EU-average factor for German operations — per the EEA's country comparison, Germany's grid is significantly more carbon-intensive than the EU average because of its fossil share.

Basis: Umweltbundesamt, Entwicklung der spezifischen THG-Emissionen des deutschen Strommix 1990–2025 (umweltbundesamt.de); GHG Protocol Scope 2 Guidance

Where do material emission factors come from?

Primary aluminum: IAI global average 14.8 kgCO2e/kg (2023, cradle-to-gate including mining, refining, smelting, casting).

Plastics (PP, PE, ABS, etc.): PlasticsEurope Eco-profiles 2024 European averages.

Steel: worldsteel eco-profile 2024 global average.

Always use cradle-to-gate values, not process-boundary values. Process-boundary only covers direct emissions at the plant, missing upstream electricity and material production.

Basis: IAI Aluminium Carbon Footprint FAQs 2023; PlasticsEurope Eco-profiles 2024; worldsteel eco-profile 2024

How do I prepare for a CBAM declaration?

Step 1: Confirm your product falls under CBAM goods (HS codes for steel/aluminum products).

Step 2: Calculate Specific Embedded Emissions (SEE) per tonne of product — this is your Scope 1 + Scope 2 emissions divided by production volume.

Step 3: Identify the CBAM pay ratio for the reporting year (2026: 2.5%, increasing annually to 100% by 2034).

Step 4: Multiply SEE × import quantity × pay ratio × EUA price to estimate certificate cost.

Step 5: From 2026-05, third-party verified carbon data may be required — keep documentation traceable by product batch.

Basis: Regulation (EU) 2023/956, Art. 32(2) (definitive-period pay ratios); CBAM implementing regulation (EU) 2023/2015 as amended

Which standard should my carbon footprint report declare?

For product carbon footprint: ISO 14067 is the international standard for product-level carbon footprint quantification.

For corporate GHG inventory: GHG Protocol Corporate Standard (Scope 1/2/3).

For EPD (Environmental Product Declaration) in the EU: EN 15804 is the core standard.

For CBAM reporting: follow the CBAM implementing regulation's specific requirements for SEE calculation.

Always state which standard you used in the report — different standards have different system boundaries and allocation rules.

Basis: ISO 14067:2018; GHG Protocol Corporate Standard; EN 15804:2012+A2:2019

Do I need an energy management system in Germany — which rule applies to my plant?

Three German rules stack. Work them in order: (1) Are you a non-SME under the EU definition? Then EDL-G § 8 requires a DIN EN 16247-1 energy audit every four years (exempt if ISO 50001/EMAS covers ≥90% of consumption; de-minimis ≤500,000 kWh/year).

(2) Does your 3-year average total final energy use exceed 7.5 GWh/year? Then EnEfG § 8 forces a full ISO 50001 or EMAS system within 20 months of crossing the threshold — an audit is not enough.

(3) Do you want the § 9b StromStG electricity-tax rebate (€20/MWh)? Since 2024 that no longer requires any management system — old advice about ISO 50001 for tax relief is outdated (Spitzenausgleich expired 2023).

Practical route for a mid-size die casting plant: keep metering-grade monthly consumption data first — it answers the 7.5 GWh test, feeds the audit, and doubles as the Scope 2 basis for customer carbon questionnaires.

Basis: EnEfG § 8 (gesetze-im-internet.de/enefg/__8.html); EDL-G § 8 (gesetze-im-internet.de/edl-g/__8.html); StromStG § 9b

My gas bill went up in 2026 partly because of CO2 — how do I separate that cost?

German gas invoices show the national CO2 charge as a separate line (labels: 'CO2-Kostenausgleich', 'CO2-Abgabe' or 'nEHS-Kostenausgleich'), charged in ct/kWh on your consumption.

The rate follows the nEHS auction: 2025 was the last fixed price at €55/t; 2026 auctions run in a €55–65 corridor with €68 available after auction — so expect a per-kWh charge between roughly 1.1 and 1.3 ct/kWh for natural gas (≈0.2 tCO2 per MWh).

Record this line separately in the ledger: it is a controllable cost (reduce gas → the CO2 line falls proportionally) and an argument for electrification of melting/holding furnaces.

If a supplier hides the CO2 component inside the Arbeitspreis, ask for the itemized invoice — BEHG costs must be separately identifiable to be passed through.

Basis: BEHG (gesetze-im-internet.de/behg/); DEHSt nEHS price pages (dehst.de)

How do I claim the German electricity-tax rebate and what data does the customs office need?

Manufacturers claim €20/MWh of electricity tax back under § 9b StromStG via Form 1453 on the Zoll-Portal, by 31 December of the year after consumption (2025 consumption → deadline 2026-12-31). Minimum claim €250/year.

The Hauptzollamt needs: net annual kWh for each meter/location used in production, a complete-calendar-year boundary, and your customer number in the customs registry (Stammnummer).

The claim must match your own consumption records — a mismatch between declared kWh and billed kWh is the usual rejection reason, which is why 12-month clean cutoffs matter.

Same consumption file also drives your Scope 2 location-based figure and the EnEfG 7.5 GWh test — collect once, use three times.

Basis: StromStG § 9b (gesetze-im-internet.de/stromstg/__9b.html); Hauptzollamt/Formular 1453 guidance (zoll.de)

Exporting die-cast parts to the EU — the customer wants CBAM data. Exactly which numbers do I provide?

First confirm your goods are on the list: CBAM-covered goods are defined by CN codes, and die-cast parts most often fall under CN 7616 (other articles of aluminium) or CN 7326 (other articles of iron or steel). If they're on the list, the importer must declare; if not, you provide nothing.

What the customer (the importer) actually needs from you is three things: the specific embedded emissions for the batch (tCO2e per tonne of product — direct emissions plus indirect electricity emissions counted per the rules), a calculation-boundary statement (which processes and which inputs are included), and whether the data is measured or default values. The EU allows default values during the transition, but defaults are usually set high — you end up over-reporting your own carbon cost.

Don't let sales pressure scramble your timeline: the definitive regime starts 2026-01-01, the declaration obligation sits with the importer and is annual; importers under 50 t per year are exempt (introduced by Regulation 2025/2083). Your data is due before the customer's quarterly/annual aggregation — aligning definitions one month ahead is enough.

The cheapest practical sequence: use one month of electricity bills plus your purchasing ledger to compute Scope 2 and the embedded emissions of major raw materials (that's exactly the logic of our free calculation), get the per-unit order of magnitude, then decide which product lines are worth a measured system — not every line justifies verification fees.

Basis: Regulation (EU) 2023/956; Regulation (EU) 2025/2083; CBAM Annex I (CN 7326/7616)

How much electricity and carbon does one tonne of die-cast or injection-molded parts really take? How do I show the customer the math?

When a customer asks 'how much carbon per tonne', the answer is two steps added together: electricity per tonne × electricity factor (the Scope 2 part) + material per tonne × material embodied-carbon factor (the upstream Scope 3 part). The second step is usually the bigger half — many factories report only the first, and their figure comes out absurdly below peers, which gets the report rejected.

You don't need to install meters to get electricity per tonne: total monthly electricity ÷ qualified output tonnes for the month = electricity per tonne (amortized across melting, holding, the die-casting/injection machines, compressed air, and cooling). When several product lines share one line, amortize by machine running hours or output weight and state the method in the report — GB/T 32151.21-2024 accepts this; what matters is that the allocation method stays consistent.

For the electricity factor use MEE/NBS Announcement 2025 No.47: national average 0.5306 kgCO2/kWh (2023 data); use a regional value where you can (the difference between Southwest and North China exceeds 2×). The cradle-to-gate factors for aluminium ingot and aluminium alloy on the material side are all in our factor library, and the report cites the source automatically.

After you have the number, re-run it every month — the trend curve is worth more than the single point: a falling per-tonne electricity trend is the only first-party evidence you can bring when a customer asks 'what reduction measures do you have'.

Basis: GB/T 32151.21-2024; GB/T 24067-2024; MEE/NBS Announcement 2025 No.47 (0.5306 kgCO2/kWh)

Exporting toys to the EU — which year and month do the battery carbon footprint and battery passport hit?

The EU Battery Regulation (Regulation (EU) 2023/1542) actually reaches a toy factory through battery-powered toys: RC cars, ride-on cars, scooters — products that use light means of transport (LMT) batteries.

Two hard dates: from 2027-02-18 every LMT battery placed on the EU market must carry an electronic record (the battery passport); LMT battery carbon footprint declarations start 2028-08-18 (or 18 months after the relevant delegated act enters into force, whichever is later).

Two things to do now: get written confirmation from your cell supplier of their carbon-footprint data capability (the footprint obligation lands first on the battery producer and will be passed through to you), and mark 'contains an LMT battery: yes/no' in your SKU table — with and without give completely different answers on next year's customer questionnaires.

Clockwork/battery-free toys and the GB 6675 toy safety standards (2025 edition mandatory from 2026-11-01, no carbon clause) are unaffected by this timeline — don't let bundled sales pitches make you pay for compliance you don't need.

Basis: Regulation (EU) 2023/1542 Art. 7 / Art. 77; GB 6675.x-2025 (effective 2026-11-01, no carbon clause)

A brand sent us a supplier carbon questionnaire (EcoVadis or their own platform) — what do we actually fill in?

Conclusion first, to take the panic out: these questionnaires are commercial practice, not enforced by any EU regulation (our policy page deliberately does not list them as a compliance requirement). But they genuinely decide orders and supplier scores, so treat it as a project, not a disaster.

The carbon section of nine out of ten questionnaires has four blocks: organizational-boundary annual Scope 1/2 emissions (state the factors and sources — never a bare number), energy structure (quantities of electricity/gas/other carriers), targets and reduction measures (a per-tonne electricity trend as first-party evidence works far better than 'we take environmental protection seriously'), and data governance (who owns it, how often it updates, whether a third party verifies it).

The most common way to fail is mixing up boundaries: a corporate inventory (annual total) and a product carbon footprint (per product) are two different things — read carefully which one each field asks for. Computing both and filing them separately takes 10 minutes; mixing them up means starting over.

You don't need a perfect score on the first pass: carbon usually carries 10-25% of the total weight on these platforms, and getting 'a boundary, numbers, sources, monthly updates' solid already beats most peers who skip it or guess. Your monthly calculation report doubles as questionnaire ammunition.

Basis: GB/T 24067-2024; GHG Protocol (the questionnaire industry's common reference)

What are Scope 1, 2, and 3 emissions?

Scope 1: Direct emissions from sources you own or control — natural gas combustion in melting furnaces, diesel generators, company vehicles.

Scope 2: Indirect emissions from purchased electricity, steam, heating, and cooling. For most manufacturers this is the largest single category.

Scope 3: All other indirect emissions in your value chain — purchased materials (aluminum, plastic resin), transportation, waste, business travel.

The GHG Protocol Corporate Standard defines these three scopes. The boundary is 'operational control' or 'equity share' — you must state which you use.

Basis: GHG Protocol Corporate Standard (WRI/WBCSD)

Who pays for CBAM certificates — us or our EU customer?

The EU importer of record pays for CBAM certificates, not the non-EU manufacturer directly.

However, in practice the cost is passed through to you via procurement pricing — your EU customer will factor the CBAM cost into their purchasing decision.

This means having accurate, verifiable carbon data directly affects your competitiveness in the EU market.

The CBAM cost depends on your product's embedded emissions (SEE) × CBAM pay ratio × EUA price.

Basis: Regulation (EU) 2023/956; EU CBAM implementing regulation

What does carbon accounting actually cost? A consulting firm quoted six figures — is that reasonable?

The EU market has published reference points: entry-level CBAM reporting tools list at €1,290–2,499/yr (ComplyStandards, Dubrink, ClimEase), supplier-side access runs €1,000–4,000/yr per installation, SME carbon-accounting platforms start around €3,800/yr (Greenly), and mid-market suites quote €15,000+. Bespoke consulting sits above all of it — a one-off inventory quoted in five or six figures is real money, because it sells people: consultant interviews, on-site data collection, report writing. Most of your money pays for 'someone assembling your spreadsheets and electricity bills for you'.

So the real question is not whether it is expensive but: what happens year two. Consulting delivers one report; customer questionnaires will come again next year. If the data process never lived in your factory, you have to buy it all over again.

Our pricing logic is the reverse: the data process lives in your factory (upload bills once a month, a few minutes), calculation and reporting are generated automatically, the price is 30-50% of the options above, renewal years get an automatic discount, and the quote is computed live on the pricing page — no negotiating with sales.

Choosing your tier is simple: just answering customer questionnaires — the version that outputs a deliverable report is enough; benchmarking reductions or calculating CBAM cost — that's when you need a higher tier. The free version lets you run one cycle before deciding.